A US Government Watchdog Warns Trump's Border Wall Costs More Than Claimed

Since the start of his presidential campaign, Donald Trump said he would build a wall. Yet a government watchdog agency is saying it could cost billions of dollars more than estimated. According to Business Insider, there is “key information” missing from the plans to build it. The agency also said it could take longer than planned to build or not perform as expected. Some factors to consider when building this wall are terrain changes and land ownership.